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Comment on `Electronic Properties of Red P-Type Tl2S5 Single Crystals' |
| M. Cankurtaran;H. Celik |
| Department of Physics, Faculty of Engineering, Hacettepe University, Beytepe, 06800 Ankara, Turkey |
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| Cite this article: |
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M. Cankurtaran, H. Celik 2007 Chin. Phys. Lett. 24 1786-1786 |
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Abstract Recently, Gamal et al. [Chin. Phys. Lett. 22 (2005) 1530] reported the results of electrical conductivity, Hall effect and thermoelectric measurements on p-type Tl2S5 single crystals. From the experimental data for the temperature dependence of differential thermoelectric power, Gamal et al. determined the
values of 2.66×10-41kg and 2.50×10-41kg, respectively, for the effective masses of electrons and holes in p-type Tl2S5, which are about ten orders of magnitude smaller than the free electron mass (9.11×10-31kg). We argue that the anomalously small values obtained for the effective mass of charge
carriers in Tl2S5 have no physical significance.
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| Keywords:
72.20.Fv
72.20.Pa
72.20.My
72.80.Ey
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Received: 14 September 2006
Published: 17 May 2007
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| PACS: |
72.20.Fv
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72.20.Pa
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(Thermoelectric and thermomagnetic effects)
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72.20.My
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(Galvanomagnetic and other magnetotransport effects)
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72.80.Ey
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(III-V and II-VI semiconductors)
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[1] Gamal G A, Abou Zied M M and Ebnalwaled A A 2005 Chin.Phys. Lett. 22 1530
[2] Kittel C 1986 Introduction to Solid State Physics 6th edn(New York: Wiley)
[3] Yu P Y and Cardona M 1996 Fundamentals of Semiconductors:Physics and Material Properties (Berlin: Springer) |
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